Journal Article

Price Discrimination by a Many-Product Firm

Mark Armstrong

in The Review of Economic Studies

Published on behalf of Review of Economic Studies Ltd

Volume 66, issue 1, pages 151-168
Published in print January 1999 | ISSN: 0034-6527
Published online January 1999 | e-ISSN: 1467-937X | DOI:
Price Discrimination by a Many-Product Firm

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Determining the optimal selling strategy for a multiproduct firm facing consumers with unobservable tastes is a difficult task. This paper aims to show how almost optimal nonlinear tariffs can often be found when the number of products is large. Moreover, such tariffs take a simple form: (i) when taste parameters are independently distributed across products, the almost optimal tariff is a single cost-based two-part tariff which can extract virtually all consumer surplus; (ii) when tastes are correlated across products, perhaps because of income differences across consumers, the almost optimal tariff can be implemented as a menu of two-part tariffs each of which has prices proportional to marginal costs.

Journal Article.  0 words. 

Subjects: Economics

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